CN201987995U

CN201987995U - Push rod structure of self-destroying injector

Info

Publication number: CN201987995U
Application number: CN2010206867864U
Authority: CN
Inventors: 高亦岑; 刘华龙
Original assignee: Shanghai Kangdelai Enterprise Development Group Co Ltd
Current assignee: Shanghai Kangdelai Enterprise Development Group Co Ltd
Priority date: 2010-12-29
Filing date: 2010-12-29
Publication date: 2011-09-28
Anticipated expiration: 2020-12-29

Abstract

The utility model relates to a push rod structure of a self-destroying injector, which comprises a core pin arranged in an outer sleeve and a press handle connected on the bottom surface of the core pin, wherein the press handle and the bottom surface of the core pin are detachably connected; the bottom of the core pin is provided with a joint which is integrally manufactured with the core pin and has a cross-shaped rib structure; a bulge is arranged on the outer end surface of each rib of the joint; the press handle is provided with a round piece and a connecting base which is fixed on the top surface of the round piece and has a cross-shaped inner cavity; the joint is arranged in the cross-shaped inner cavity of the connecting base; and the inner wall of the inner cavity of the connecting base is provided with a limiting convex edge which is matched with the budge on the joint of the core pin. According to the push rod structure of the self-destroying injector, the press handle and the core pin are detachably connected, and in order to pull out the core pin after the injection, the press handle is separated from the core pin, so that force can not be applied on the core pin, therefore, the push rod structure of the self-destroying injector realizes the self-destroying effect actually and can avoid repeated use.

Description

A kind of pusher structure of self-destructive syringe

Technical field

This utility model relates to a kind of disposable syringe, relates in particular to a kind of pusher structure of self-destructive syringe.

Background technology

Though at present the disposable syringe that uses should disposablely use according to the rules, still once more or nonexpondable may, exist since syringe reuse easily cause its sterilization not thoroughly, the easy shortcoming of generation cross infection of virus.

In order to prevent the generation of above-mentioned situation, Disposable, self-destroying type syringe is widely used, existing self-destructive syringe structure exist product design unreasonable, in practical operation poor work stability, real shortcoming such as self-destruction.

Summary of the invention

The purpose of this utility model provides a kind of pusher structure of self-destructive syringe exactly in order to address the above problem, this pusher structure is reasonable, has also solved the really problem of self-destruction simultaneously.

The purpose of this utility model is achieved in that a kind of pusher structure of self-destructive syringe, comprise the hands of pressing that is loaded on the core bar in the overcoat and is connected in the core bar bottom, described by hands and core bar bottom for removably connecting, described core bar bottom is provided with and makes one with it, joint with cross muscle structure, each muscle rib outer face of this joint is equipped with a projection, describedly comprise a disk and be fixed in the disk end face by hands, Connection Block with cross inner chamber, described joint places the cross inner chamber of described Connection Block, the inwall of described Connection Block inner chamber be provided with the core bar joint on the spacing fin that is complementary of projection.

The pusher structure of this utility model self-destructive syringe adopts and removably connects by hands and core bar, and its injection back is then pressed hands and broken away from core bar earlier if want to extract core bar, makes on the core bar application of force nowhere to have realized self-destruction truly, prevents reusable possibility.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the structural representation of core bar in this utility model;

Fig. 3 is the structural representation of core bar bottom in this utility model;

Fig. 4 is a structural representation of pressing hands in this utility model;

Fig. 5 is along the cutaway view of A-A direction among Fig. 4.

The specific embodiment

Participate in Fig. 1 to Fig. 5, the pusher structure of this utility model self-destructive syringe, what comprise the core bar 2 that is loaded in the overcoat 1 and be connected in core bar 2 bottoms presses hands 3, core bar 2 bottoms are provided with the joint 4 of making one with it, this joint 4 is a cross muscle structure, and each muscle rib outer face is equipped with a projection 41, and should projection 41 all be positioned on the same horizontal plane, comprise a disk 31 and the Connection Block 32 that is fixed in disk 31 end faces by hands 3, it is cross inner chamber 33 that this Connection Block 32 has the cross section, the inwall of Connection Block 32 inner chambers 33 be provided with core bar 2 joints 4 on the spacing fin 34 that is complementary of projection 41.

When the Connection Block 32 of pressing hands 3 is connected with the joint 4 of core bar 2 bottoms as shown in Figure 1, the crossed stiffened plate of joint 4 inserts in the inner chamber 33 of Connection Block 32, during near intracavity bottom, projection 41 on the joint 4 contacts with spacing fin 34 on the inner chamber 33, and when inserting intracavity bottom fully, the projection 41 on the joint 4 is fully by the spacing fin 34 on the inner chamber 33, at this moment, spacing fin 34 firmly blocks projection 41, can't recall, and core bar 2 is finished with being connected by hands 3 thus.

The pusher structure of this utility model self-destructive syringe can cooperate the self-locking device in the overcoat 1 to use, specific design is: the required power of releasing self-locking device is greater than and makes core bar 2 and press isolating power between the hands 3, if after arriving to a certain degree to the power that applies recession by hands 3, promptly separate by hands 3 with core bar 2, can't apply the power of recession again to core bar 2, realize self-destruction truly.

Above embodiment is only for the usefulness that this utility model is described, but not to restriction of the present utility model, person skilled in the relevant technique, under the situation that does not break away from spirit and scope of the present utility model, can also make various conversion or modification, therefore all technical schemes that are equal to also should belong to category of the present utility model, should be limited by each claim.

Claims

1. the pusher structure of a self-destructive syringe comprises the hands of pressing that is loaded on the core bar in the overcoat and is connected in the core bar bottom, it is characterized in that, described by hands bottom core bar for removably connecting.

2. the pusher structure of self-destructive syringe according to claim 1, it is characterized in that, described core bar bottom is provided with and makes joint one, that have cross muscle structure with it, each muscle rib outer face of this joint is equipped with a projection, describedly comprise a disk and be fixed in the disk end face, have the Connection Block of cross inner chamber by hands, described joint places the cross inner chamber of described Connection Block, the inwall of described Connection Block inner chamber be provided with the core bar joint on the spacing fin that is complementary of projection.